National has the edge because older voters have always turned out in greater numbers than the young ones. Labour says it needs time in government to nail down issues such as the water tax, which National doesn't accept. And she appears to have achieved it largely by managing to generate political interest among younger voters. Because they've been around a long time, nearly all of the older voters are registered. When it comes to the crunch, older voters historically make an effort to get out and vote.

Source: Otago Daily Times September 19, 2017 20:37 UTC